##at trout population at risk . since the la ##hon ##tan was officially designated as a threatened species , environmental groups began advocating the cancellation of grazing permits in the trout creek mountains . beginning in the early 1970s , the bureau of land management identified damaged rip ##arian zones and began projects to restore natural habitat in those areas . approximately 20 @ , @ 000 willow trees were planted along streams , small dams were put together to create more pools in the streams , and fencing was added to protect rip ##arian zones from grazing . next , the agency sought to reform land @ - @ use plans to change grazing practices , which became a complex and controversial project . as environmental ##ists
##at trout population at risk. since the lahontan was officially designated as a threatened species, environmental groups began advocating the cancellation of grazing permits in the trout creek mountains. beginning in the early 1970s, the bureau of land management identified damaged riparian zones and began projects to restore natural habitat in those areas. approximately 20 @, @ 000 willow trees were planted along streams, small dams were put together to create more pools in the streams, and fencing was added to protect riparian zones from grazing. next, the agency sought to reform land @ - @ use plans to change grazing practices, which became a complex and controversial project. as environmentalists